Originally posted by shutterpuppy Softness at the end of the zoom doesn't bother me, I can always correct that in PP, I'm just hoping that "shake reduction" does it's job there at the end of the 300mm point... need to do more testing.
Barry
Say
what? You can correct a soft APPEARANCE (sometimes), but you can't actually recover the lost information.
Soft means less resolution, less MTF, less actual meaningful information content in the picture. If a 300mm lens were sufficiently soft, it means you would get better real, optical resolution by taking a sharp 200mm lens and cropping down the image. So, for example, if you take a picture of a small bird that only covers a 1000x1000 area of the sensor, but the lens is very soft... there's no way to recover the lost detail in PP.
CA/PF also means lost information... but it tends to be isolated to certain contrasty edges, whereas softness often affects a large portion of the image, or the whole thing.
As for shake reduction: the K10D's shake reduction does a good job at 300mm. I usually get about 2-3 stops, I can almost always get a sharp handheld 1/100s exposure, often 1/50s.